TCG
TCG is an abbreviation for:
- Team Cannondale-Garmin , an American cycling team
- Geocentric coordinate time (from French Temps Coordonné Geocentrique , English Geocentric Coordinate Time), an astronomical time system
- Trading Card Game, see Trading Card Game
- Trusted Computing Group , an American standardization organization for the computer industry
- Türkiye Cumhuriyeti Gemisi, ship name prefix for ships of the Turkish Navy, see Turkish Armed Forces # Navy